Now your smartphone will monitor your blood oxygen levels – an innovation that will prevent maternal and fetal deaths around the world. Called the [Phone Oximeter](http://www2.lgtmedical.com/products/phone-oximeter/), the device consists of a software application and a non-invasive light sensor that attaches to a patient’s finger. The app can be installed on any smartphone, tablet or laptop computer, and the sensor directs light waves through a patient’s fingertip to measure blood oxygen levels.